<template>
  <div class="app-container">
    <el-form :model="queryParams" ref="queryForm" size="small" :inline="true" v-show="showSearch">
      <el-form-item label="学习分类名称" prop="name">
        <el-input v-model="queryParams.name" placeholder="请输入学习分类名称" clearable @keyup.enter.native="handleQuery" />
      </el-form-item>
      <el-form-item>
        <el-button type="primary" icon="el-icon-search" size="mini" @click="handleQuery">搜索</el-button>
        <el-button icon="el-icon-refresh" size="mini" @click="resetQuery">重置</el-button>
      </el-form-item>
    </el-form>

    <el-row :gutter="10" class="mb8">
      <el-col :span="1.5">
        <el-button type="primary" plain icon="el-icon-plus" size="mini" @click="handleAdd"
          v-hasPermi="['customer:learncategory:add']">新增</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button type="info" plain icon="el-icon-sort" size="mini" @click="toggleExpandAll">展开/折叠</el-button>
      </el-col>
      <right-toolbar :showSearch.sync="showSearch" @queryTable="getList"></right-toolbar>
    </el-row>

    <el-table v-if="refreshTable" v-loading="loading" :data="learncategoryList" row-key="learnCategoryId"
      :default-expand-all="isExpandAll" :tree-props="{ children: 'children', hasChildren: 'hasChildren' }">
      <el-table-column prop="name" label="学习分类名称" width="260"></el-table-column>
      <el-table-column prop="description" label="学习分类描述" width="260"></el-table-column>
      <el-table-column label="创建时间" align="center" prop="createTime" width="200">
        <template slot-scope="scope">
          <span>{{ parseTime(scope.row.createTime) }}</span>
        </template>
      </el-table-column>
      <el-table-column label="操作" align="center" class-name="small-padding fixed-width">
        <template slot-scope="scope">
          <el-button size="mini" type="text" icon="el-icon-edit" @click="handleUpdate(scope.row)"
            v-hasPermi="['customer:learncategory:edit']">修改</el-button>
          <el-button size="mini" type="text" icon="el-icon-plus" @click="handleAdd(scope.row)"
            v-hasPermi="['customer:learncategory:add']">新增</el-button>
          <el-button v-if="scope.row.parentId != 0" size="mini" type="text" icon="el-icon-delete"
            @click="handleDelete(scope.row)" v-hasPermi="['customer:learncategory:remove']">删除</el-button>
        </template>
      </el-table-column>
    </el-table>

    <!-- 添加或修改部门对话框 -->
    <el-dialog :title="title" :visible.sync="open" width="600px" append-to-body>
      <el-form ref="form" :model="form" :rules="rules" label-width="80px">
        <el-row>
          <el-col :span="24" v-if="form.parentId !== 0">
            <el-form-item label="上级学习分类" prop="parentId">
              <treeselect v-model="form.parentId" :options="categoryOptions" :normalizer="normalizer"
                placeholder="选择上级分类" />
            </el-form-item>
          </el-col>
        </el-row>
        <el-row>
          <el-col :span="24">
            <el-form-item label="学习分类名称" prop="name">
              <el-input v-model="form.name" placeholder="请输入学习分类名称" />
            </el-form-item>
          </el-col>
        </el-row>
        <el-row>
          <el-col :span="24">
            <el-form-item label="学习分类类型">
              <el-select v-model="form.categoryType" placeholder="请选择类型">
                <el-option v-for="dict in dict.type.learn_category_type" :key="dict.value" :label="dict.label"
                  :value="dict.value"></el-option>
              </el-select>
            </el-form-item>
          </el-col>
        </el-row>
        <el-row>
          <el-col :span="24">
            <el-form-item label="图片连接" prop="pictureUrl">
              <ImageUpload @success="uploadPicture" :limit="1" :value="form.pictureUrl" />
            </el-form-item>
          </el-col>
        </el-row>
        <el-row>
          <el-col :span="24">
            <el-form-item label="学习分类描述" prop="description">
              <el-input v-model="form.description" type="textarea" placeholder="请输入学习分类描述" />
            </el-form-item>
          </el-col>
        </el-row>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button type="primary" @click="submitForm">确 定</el-button>
        <el-button @click="cancel">取 消</el-button>
      </div>
    </el-dialog>
  </div>
</template>
<script>
import { listLearncategory, getLearncategory, delLearncategory, addLearncategory, updateLearncategory } from "@/api/customer/learncategory";
import Treeselect from "@riophae/vue-treeselect";
import "@riophae/vue-treeselect/dist/vue-treeselect.css";

export default {
  name: "Learncategory",
  dicts: ['learn_category_type'],
  components: { Treeselect },
  data() {
    return {
      // 遮罩层
      loading: true,
      // 选中数组
      ids: [],
      // 非单个禁用
      single: true,
      // 非多个禁用
      multiple: true,
      // 显示搜索条件
      showSearch: true,
      // 总条数
      total: 0,
      // 学习库分类树表格数据
      learncategoryList: [],
      categoryOptions: [],
      // 是否展开，默认全部展开
      isExpandAll: true,
      // 重新渲染表格状态
      refreshTable: true,
      // 弹出层标题
      title: "",
      // 是否显示弹出层
      open: false,
      // 查询参数
      queryParams: {
        pageNum: 1,
        pageSize: 10,
        name: null,
        pictureUrl: null,
        description: null,
        parentId: null,
      },
      // 表单参数
      form: {},
      // 表单校验
      rules: {
        parentId: [
          { required: true, message: "上级分类不能为空", trigger: "blur" }
        ],
        name: [
          { required: true, message: "分类名称不能为空", trigger: "blur" }
        ],
      }
    };
  },
  created() {
    this.getList();
  },
  methods: {
    /** 查询学习库分类树列表 */
    getList() {
      this.loading = true;
      listLearncategory(this.queryParams).then(response => {
        this.learncategoryList = this.handleTree(response.rows, "learnCategoryId");
        this.total = response.total;
        this.loading = false;
      });
    },
    /** 转换部门数据结构 */
    normalizer(node) {
      if (node.children && !node.children.length) {
        delete node.children;
      }
      return {
        id: node.learnCategoryId,
        label: node.name,
        children: node.children
      };
    },
    /** 展开/折叠操作 */
    toggleExpandAll() {
      this.refreshTable = false;
      this.isExpandAll = !this.isExpandAll;
      this.$nextTick(() => {
        this.refreshTable = true;
      });
    },
    // 取消按钮
    cancel() {
      this.open = false;
      this.reset();
    },
    // 表单重置
    reset() {
      this.form = {
        learnCategoryId: null,
        name: null,
        pictureUrl: null,
        description: null,
        parentId: null,
        createBy: null,
        createTime: null,
        updateBy: null,
        updateTime: null,
        remark: null
      };
      this.resetForm("form");
    },
    uploadPicture(file) {
      this.form.pictureUrl = file;
    },
    /** 搜索按钮操作 */
    handleQuery() {
      this.queryParams.pageNum = 1;
      this.getList();
    },
    /** 重置按钮操作 */
    resetQuery() {
      this.resetForm("queryForm");
      this.handleQuery();
    },
    // 多选框选中数据
    handleSelectionChange(selection) {
      this.ids = selection.map(item => item.learnCategoryId)
      this.single = selection.length !== 1
      this.multiple = !selection.length
    },
    /** 新增按钮操作 */
    handleAdd(row) {
      this.reset();
      if (row != undefined) {
        this.form.parentId = row.learnCategoryId;
      }
      this.open = true;
      this.title = "添加学习库分类树";
      listLearncategory().then(response => {
        this.categoryOptions = this.handleTree(response.rows, "learnCategoryId");
      });
    },
    /** 修改按钮操作 */
    handleUpdate(row) {
      this.reset();
      if (row.learnCategoryId == row.parentId) {
        this.$modal.msgError("不能选择自己作为父节点");
        return;
      }
      listLearncategory().then(response => {
        this.categoryOptions = this.handleTree(response.rows, "learnCategoryId");
      });
      const learnCategoryId = row.learnCategoryId || this.ids
      getLearncategory(learnCategoryId).then(response => {
        this.form = response.data;
        this.open = true;
        this.title = "修改学习库分类树";
      });
    },
    /** 提交按钮 */
    submitForm() {
      if (this.form.learnCategoryId == this.form.parentId) {
        this.$modal.msgError("不能选择自己作为父节点");
        return;
      }
      this.$refs["form"].validate(valid => {
        if (valid) {
          if (this.form.learnCategoryId != null) {
            updateLearncategory(this.form).then(response => {
              this.$modal.msgSuccess("修改成功");
              this.open = false;
              this.getList();
            });
          } else {
            addLearncategory(this.form).then(response => {
              this.$modal.msgSuccess("新增成功");
              this.open = false;
              this.getList();
            });
          }
        }
      });
    },
    /** 删除按钮操作 */
    handleDelete(row) {
      const learnCategoryIds = row.learnCategoryId || this.ids;
      this.$modal.confirm('是否确认删除学习库分类树编号为"' + learnCategoryIds + '"的数据项？').then(function () {
        return delLearncategory(learnCategoryIds);
      }).then(() => {
        this.getList();
        this.$modal.msgSuccess("删除成功");
      }).catch(() => { });
    },
    // /** 导出按钮操作 */
    // handleExport() {
    //   this.download('customer/learncategory/export', {
    //     ...this.queryParams
    //   }, `learncategory_${new Date().getTime()}.xlsx`)
    // }
  }
};
</script>
